A Coulomb explosion theoretical model of femtosecond laser ablation materials

Lin, Xin; HaiQuan, Chen; Jiang, Shuyun; Zhang, Chibin

doi:10.1007/s11431-011-4702-8

Cited by 11 publications

(9 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higher laser energy leads to more accumulation of photon energy. Thus the influence of mechanism of interaction of laser with material such as coulomb explosion, phase explosion, avalanche ionization, and multiphoton ionization is more obvious, resulting in more free-carrier plasmas [4,12,22,[34][35][36][37]. The interaction of the coulomb repulsion with each plasma is difficult to completely splash them out, which results in more severe deposition of the material in the surrounding area of the crater and formation of an uneven ablation morphology and poorer crater roundness.…”

Section: Ablation Morphological Characteristicsmentioning

confidence: 99%

“…According to the literature [4,12,22,[34][35][36][37], the interaction mechanism of ultrafast pulsed laser with material mainly includes common melting, ultrafast melting, thermal vaporization, coulomb explosion, phase explosion, avalanche ionization, and multiphoton ionization. However, the material removal process actually involves the combined effects of multiple mechanisms, which are difficult to distinguish clearly.…”

Section: Division Of Ablation Areamentioning

confidence: 99%

See 1 more Smart Citation

Surface ablation and threshold determination of AlCu4SiMg aluminum alloy in picosecond pulsed laser micromachining

Zheng

Jiang

Wang

et al. 2017

Optics & Laser Technology

View full text Add to dashboard Cite

Section: Ablation Morphological Characteristicsmentioning

confidence: 99%

Section: Division Of Ablation Areamentioning

confidence: 99%

Surface ablation and threshold determination of AlCu4SiMg aluminum alloy in picosecond pulsed laser micromachining

Zheng

Jiang

Wang

et al. 2017

Optics & Laser Technology

View full text Add to dashboard Cite

“…CE can be formulated through two ways for dielectric materials [51]. The hydrodynamics-based model is suitable for nanosecond pulse, which consists of the continuity equations of electrons and ion cores, two-temperature equations for the charged particle distribution, and Poisson equation for the electric field.…”

Section: Ce At Nanometric Scalementioning

confidence: 99%

Laser machining fundamentals: micro, nano, atomic and close-to-atomic scales

Wang

et al. 2023

Int. J. Extrem. Manuf.

View full text Add to dashboard Cite

With the rapid development in advanced industries, such as microelectronics and optics sectors, the functional feature size of devises/components has been decreasing from micro to nanometric, and even atomic and close-to-atomic scale (ACS) for higher performance, smaller volume and lower energy consumption. By this time, a great many quantum structures are proposed, with not only an extreme scale of several or even single atom, but also a nearly ideal lattice structure with no material defect. It is almost no doubt that such structures play critical role in the next generation products, which shows an urgent demand for the atomic and close-to-atomic scale manufacturing (ACSM). Laser machining is one of the most important approaches widely used in engineering and scientific research. It is high-efficient and applicable for most kinds of materials. Moreover, the processing scale covers a huge range from millimeters to nanometers, and has already touches the atomic level. Laser-material interaction mechanism, as the foundation of laser machining, determines the machining accuracy and surface quality. It becomes much more sophisticated and dominant with a decrease in processing scale, which is systematically reviewed in this article. In general, the mechanisms of laser-induced material removal are classified into ablation, Coulomb explosion and atomic desorption, with a decrease in the scale from above microns to angstroms. The effects of processing parameters on both fundamental material response and machined surface quality are discussed, as well as theoretical methods to simulate and understand the underlying mechanisms. Examples at nanometric to atomic scale are provided, which demonstrate the capability of laser machining in achieving the ultimate precision and becoming a promising approach to ACSM.

show abstract

“…Such equations can be solved and used for computational simulations which are in accordance with the Gierer-Meinhardt model [3,4,5,30]. The nematocyst discharge process itself is often characterized as a kind of Coulomb explosion which has recently been discussed for a different phenomenon in anorganic chemistry, analytic chemistry and material sciences [31,32,33]. We argue here that the central effect of the nematocyst discharge process, the expulsion of the stylet is only loosely related to the Coulomb explosions described in the literature cited above.…”

Section: Introductionmentioning

confidence: 99%

The Sialic Acid-Dependent Nematocyst Discharge Process in Relation to Its Physical-Chemical Properties Is a Role Model for Nanomedical Diagnostic and Therapeutic Tools

et al. 2019

View full text Add to dashboard Cite

Formulas derived from theoretical physics provide important insights about the nematocyst discharge process of Cnidaria (Hydra, jellyfishes, box-jellyfishes and sea-anemones). Our model description of the fastest process in living nature raises and answers questions related to the material properties of the cell- and tubule-walls of nematocysts including their polysialic acid (polySia) dependent target function. Since a number of tumor-cells, especially brain-tumor cells such as neuroblastoma tissues carry the polysaccharide chain polySia in similar concentration as fish eggs or fish skin, it makes sense to use these findings for new diagnostic and therapeutic approaches in the field of nanomedicine. Therefore, the nematocyst discharge process can be considered as a bionic blue-print for future nanomedical devices in cancer diagnostics and therapies. This approach is promising because the physical background of this process can be described in a sufficient way with formulas presented here. Additionally, we discuss biophysical and biochemical experiments which will allow us to define proper boundary conditions in order to support our theoretical model approach. PolySia glycans occur in a similar density on malignant tumor cells than on the cell surfaces of Cnidarian predators and preys. The knowledge of the polySia-dependent initiation of the nematocyst discharge process in an intact nematocyte is an essential prerequisite regarding the further development of target-directed nanomedical devices for diagnostic and therapeutic purposes. The theoretical description as well as the computationally and experimentally derived results about the biophysical and biochemical parameters can contribute to a proper design of anti-tumor drug ejecting vessels which use a stylet-tubule system. Especially, the role of nematogalectins is of interest because these bridging proteins contribute as well as special collagen fibers to the elastic band properties. The basic concepts of the nematocyst discharge process inside the tubule cell walls of nematocysts were studied in jellyfishes and in Hydra which are ideal model organisms. Hydra has already been chosen by Alan Turing in order to figure out how the chemical basis of morphogenesis can be described in a fundamental way. This encouraged us to discuss the action of nematocysts in relation to morphological aspects and material requirements. Using these insights, it is now possible to discuss natural and artificial nematocyst-like vessels with optimized properties for a diagnostic and therapeutic use, e.g., in neurooncology. We show here that crucial physical parameters such as pressure thresholds and elasticity properties during the nematocyst discharge process can be described in a consistent and satisfactory way with an impact on the construction of new nanomedical devices.

show abstract

A Coulomb explosion theoretical model of femtosecond laser ablation materials

Cited by 11 publications

References 24 publications

Surface ablation and threshold determination of AlCu4SiMg aluminum alloy in picosecond pulsed laser micromachining

Surface ablation and threshold determination of AlCu4SiMg aluminum alloy in picosecond pulsed laser micromachining

Laser machining fundamentals: micro, nano, atomic and close-to-atomic scales

The Sialic Acid-Dependent Nematocyst Discharge Process in Relation to Its Physical-Chemical Properties Is a Role Model for Nanomedical Diagnostic and Therapeutic Tools

Contact Info

Product

Resources

About